This is a front-end for the Online Encyclopedia of Integer Sequences, made by Christian Perfect. The idea is to provide OEIS entries in non-ancient HTML, and then to think about how they're presented visually. The source code is on GitHub.
%I A374875 #4 Sep 13 2024 08:04:40
%S A374875 1,2,8,108,6048,2016000,4704480000,90747697360320,
%T A374875 16354583259191654400,30715766088740592418944000,
%U A374875 663127739407725552738699264000000,179787972724005939376371515117626982400000,664012371757346621597356008815791014131773440000000
%N A374875 Obverse convolution (n!)**A000045; see Comments.
%C A374875 See A374848 for the definition of obverse convolution and a guide to related sequences.
%t A374875 s[n_] := n!; t[n_] := Fibonacci[n];
%t A374875 u[n_] := Product[s[k] + t[n - k], {k, 0, n}]
%t A374875 Table[u[n], {n, 0, 13}]
%Y A374875 Cf. A000045, A000142, A374848.
%K A374875 nonn
%O A374875 0,2
%A A374875 _Clark Kimberling_, Sep 12 2024